Pinking-machine.



No. 812,465. PATENTED FEB.13, 1906. P. H; SWEET.

PINKING MACHINE.

- APPLICATION FILED MAB..17, 1905.

.MJllllllllillllllllll IIIIIIIIIIIIIIIIIII/A III/111111111111) UNITEDSTATES PARKER H.

FILE AND MACHINE COMPANY, OF BROOKLYN,

PORATION OF NEW YORK.

PATENT OFFICE.

SWVEET, OF NEW YORK, N. Y., ASSIGNOR TO THE ROTARY NEW YORK, A COR-PlNKlNG-IVIACHINE.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Application filed March 17, 1905. Serial No. 250,685.

To ctZZ whom it may concern.-

Be it known that I, PARKER H. SWEET, .a citizen of the United States,and a resident of the city of New York, county of Kings, State of NewYork, have invented certain new and useful Improvements inPinking-Machines, of which the following is a specification.

My invention relates to that class of machines used for pinking orsimilarly ornamenting cloth, leather, and other like materials bypassing such materials between two revolving rolls, the one beingprovided with cutting edges, the other acting as a bearing or anvil rolltherefor.

The object of my invention is to secure in a rotary pinking-machine anautomatic relative adjustment of the cutting and anvil rolls such thatthe latter will present a rela-- tively constant resistance to varyingpressures within normal limits; but when breaking pressures occur theanvil-roll will automatically yield to such abnormal increase. I attainthese objects by my novel construction hereinafter more particularlydescribed, reference being had to the drawings, throughout which likereference-numerals indicate the same or corresponding parts in theseveral views.

' In the drawings, Figure 1 is a perspective elevation of my improvedmachine. Fig. 2 is a perspective elevation of the machine, taken atright angles to Fig. 1. Fig. 3 is a plan view from the top. Fig. 4 is adetail view showing an alternative construction of the compensatingmechanism.

The frame of the machine (best shown in Fig. 2) is preferably cast inone piece and consists of the bed-plate 1, the downwardly and inwardlycurved projection 2, through which passes the clamping-screw 3 forattaching the machine to a table or bench, and the standard 4.terminating in the sleeve 5, projecting at right angles'to the standard.

Mounted rotatably in the sleeve 5 is a shaft 26. (More clearly shown inFig. 3.) At the outer end of this shaft and for reasons of economy,preferably integral therewith is the gear-wheel 6, meshing with thecogged driving-wheel 7, which is secured to the standard by the screw 8.Attached to or preferably integral with the wheel 7 is the, crank 9 forfor this crank, and the machine may be belted to any convenient sourceof power.

The shaft 26 terminates in a threaded portion 10, the thread beinglefthanded. Upon this threaded portion is screwed the cutting roll 11,which is tapped to fit closely thereto. This thread being left-handed itwill be noticed that the cutting-roll may be turned up on this threadedportion by simply holding the cutter-roll against this threaded portionand rotating the crank clockwise in the usual way. Moreover, to removethe cutter it is sufficient to merely rotate the crank counterclockwise,in which case thefriction of the anvil-roll will cause the cutter-rollto be turned off from the shaft. The cutting edge of this cutter may beof any desired form or may be provided with a series of punches formaking holes of'any desired shape.

Integral with the bed-plate 1 is a projection horizontally elongated inalineinent with the standard and having the cylindrical terminals 13 13.Bent to partially encircle these cylindrical projections are the forkedends of the two supports 16 16, fastened to or integral with the table14. The table and its supports are thus loosely fastened to thebed-plate, while pivotal motion is permitted about the projections 1313. The supports are of sufiicient length and thickness and of theproper material to be capable of a certain amount of spring for thepurpose hereinafter set forth. The center of this table is provided witha slot to admit the anvil or bear ing roll 17. This roll is provided atis center with a journal or cylindrical trunnions, the ends of whichbear in the lower ends of channels cut in the table and supports. Theroll is thus easily inserted and removed, while the channels are of theproper depth to allow the periphery of the roll to project somewhatabove the surface of the table. Integral with the cross-brace betweenthe supports and at right angles to such brace an arm 20 projectssubstantially horizontally in the direction in which the material passesthrough the ma chine. Near its middle portion this arm is provided witha downwardly-tending. offset, while near its extremity it is drilled andtapped to receive the set-screw 21, which passes downward through thearm and against the bed-plate. The height from the bed-plate to the mostdistant point on the pe- 6 5 from the center of the cutter to thebed-plate. 1

riphery of the anvil-roll is slightly greater than the vertical heightto the periphery of the cutting-roll, so that when the two rolls touchtheir centers are appreciably out of vertical alinement. The pressure ofthe anvil upon the cutter can thus be regulated at will by adjusting thetilt of the table by means of the set-screw 21. The supports of thetable are made of wrought-iron or any convenient metal of sufiicientelasticity, and by means of the spring of these metal supports thedevice is protected against and compensation is made for any abnormaldamaging force. The two rolls and the supports are so nearly in linethat the ordinary downward pressure is resisted, and the set-screw21permits such pressure to be regulated at will under ordinarycircumstances. mal strains, however, act obliquely and often nearlyhorizontally, and the spring of the ta' ble amply compensates therefor.The turning force being exerted in a plane parallel to the base and thecutting force being exerted downwardly at right angles thereto, theresultant stress is exerted upon the anvil-roll at a varying angle moreor less acute with relation to the base. By mounting said roll upon anarm pivotally supported at said base said point of support being invertical alinement with the center of said cutting-roll, but the centerof said anvil-roll lying without said alinement, and by so proportioningthe lengh and thickness of said arm that it has the necessary degree ofrigidity, yet will yield under the excessive pressure resultant from anabnormal cutting force, the anvil-roll is free to move through an aresubstantially in the line of resultant stress, and its degree oftendency to yield to or resist such stress is regulated by means of anadjusting-screw turning in an offset from said pivotal support andbearing on said base-plate.

In Fig. 4 I have shown an alternative form of means for compensating forabnormal pressure which, like the other form, resists the ordinarydownward pressure, but yields to the damaging forces acting horizontallyor obliquely. The table 14 is formed upon or fastened to the standards 4and has a slight inclination downward in the direction in which thematerial passes over it. The table in this modified form consists of ahollow shell with a removable bottom, the top and bottom having slots toadmit the anvil-roll. Within this shell is a movable skeleton carriage22, mounted upon the rolls 23 23, the trunnions of which bear in theouter frame of the carriage. The trunnions of the anvilroll in a likemanner bear upon the frame of the carriage, which in practice should bereinforced at these points. As in my preferred form, when theperipheries of the anvil and cutting rolls are in contact the center ofthe former is slightly out of the perpendicular line The abnor- Themovement of the carriage, and consequently the pressure of the rolls, iscontrolled by the spring 24, the tension of which is regulated by meansof the screw 25 ,passing through the lower end or the hollow table. Theprinciple embodied in this modification is identical with that of thepreviously-described form. The centers of the two rolls are sufiicientlynearly in line, so that ordinary pressure will cause little or nopressure upon the spring 24, but in the event of any abnormal horizontalor oblique pressure the spring will compensate therefor and prevent anydamage to the mechanism.

Having described my invention, what I claim is 1. In a pin'king-machinethe combination of a cutting-roll and an anvil having their centersvertically out of alinement and means for maintaining a relativelyconstant pressure therebetween.

2. In a pinking-machine the combination of a cutting-roll and ananvil-roll having their centers vertically out of alinement and meansfor automatically adjusting the resistance of the latter to abnormallyvarying pressures.

3. In apinking-machine the combination of a cutting-roll and ananvil-roll normally contacting, the former journaled in a fixed support,and the latter in a pivotally-mounted yielding support, the two supportsmounted upon a common base, said pivot being in vertical alinement'with'the center of said outting-roll, the center of the said anvil-roll beingin'the same plane without said alinement.

4. In a pinking-machine the combination of a cutting-roll and ananvil-roll normally contacting, the former journaled in a fixed support,and the latter on a pivotally-mounted yielding support, said pivot beingin vertical alinement with the center of said cuttingroll but the saidanvil-roll being in the same plane but without said alinement, to etherwith means for adjusting said anvil-r01 with respect to said alinement.V

5. In a pinking-machine the combination of a cutting-roll rotatablymounted upon a fixed support; an anvil-roll carried upon aslightly-inclined table, supports to said table of slightly-elasticmaterial, 'an arm projecting substantially horizontally from saidsupports, and an adjustmentscrew passing through the extremity ofsaidarm'and against the base, substantially as and for the purposes setforth.

6. In a pinking-machine the combination of the bed-plate 1, the standard4, the clamp 2, the set-screw 3, the gear-wheel 6, meshing with thegeared driving-wheel 7, the crank 9, the cutting-roll 11, attached by aleft-hand thread to the shaft 26, the anvil -roll 17, mounted upon thetable 14, the table-supports 15 15, pivotally connected by cylindricalprojections upon the said bed-plate,

the adjustment-arm 20, the-adjustmentscrew 21, the anvil-roll supportbeing of such length that it normally contacts with the cutting-roll ata point without the perpendicular line from the center of thecutting-wheel to the base.

7-. In a pinking-machine the combination of a cutting-roll rotatablymounted upon a fixed support, a slightly-inclined hollow table attachedto said support, an anvil -roll mounted upon a sliding carriage withinsaid hollow table, screw and spring means for adjusting the position ofsaid carriage and anvil-roll and for compensating for abnormalpressures, the said cutting and anvil rolls normally contacting at apoint slightly without the perpendicular line from the center of thecutting-roll to the base, substantially as described.

PARKER H. SWEET.

Witnesses:

BARTLETT G. YUNG. SEWARD DAVIS.

